Add NotificationSettings and Keywords UI and VM

Riot/Modules/Room/NotificationSettings/RoomNotificationSettingsSwiftUIViewModel.swift

@@ -15,7 +15,6 @@
 //
 
 import Foundation
-import SwiftUI
 import Combine
 
 @available(iOS 14.0, *)

Riot/Modules/Room/NotificationSettings/SwiftUI/FormSectionHeader.swift

@@ -25,7 +25,7 @@ struct FormSectionHeader: View {
     var body: some View {
         Text(text)
             .foregroundColor(Color(theme.textSecondaryColor))
-            .padding(.top)
+            .padding(.top, 32)
             .padding(.leading)
             .padding(.bottom, 8)
             .font(Font(theme.fonts.subheadline))

Riot/Modules/Room/NotificationSettings/SwiftUI/RoomNotificationSettings.swift

@@ -19,7 +19,6 @@ import SwiftUI
 @available(iOS 14.0.0, *)
 struct RoomNotificationSettings: View {
     
-    @Environment(\.theme) var theme: Theme
     @ObservedObject var viewModel: RoomNotificationSettingsSwiftUIViewModel
     
     let presentedModally: Bool

Riot/Modules/Room/NotificationSettings/SwiftUI/RoomNotificationSettingsHeader.swift

@@ -38,7 +38,6 @@ struct RoomNotificationSettingsHeader: View {
             Spacer()
         }
         .padding(.top, 36)
-        .padding(.bottom, 20)
     }
 }